General description
The HEF4538B-Q100 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW trigger/retrigger input (nA) and an active HIGH trigger/retrigger input (nB). It has an overriding active LOW direct reset input (nCD) and an output (nQ) together with its complement (nQ). There are also two pins for connecting the external timing components Cext and Rext. These pins, nREXT/CEXT, and nCEXT, are always connected to ground. Typical pulse width variation over the specified temperature range is ±0.2 %.

FEATUREs and benefits
■ Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    ◆ Specified from -40 °C to +85 °C and from -40 °C to +125 °C
■ Tolerant of slow trigger rise and fall times
■ Fully static operation
■ 5 V, 10 V, and 15 V parametric ratings
■ Standardized symmetrical output characteristics
■ ESD protection:
    ◆ MIL-STD-883, method 3015 exceeds 2000 V
    ◆ HBM JESD22-A114F exceeds 2000 V
    ◆ MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 )
■ Complies with JEDEC standard JESD 13-B